Holder shank diameter : 1/2" inch , total length :3.93" inch . Black oxided smooth finish on each turning tool holder style and shank size.
Each tool holder comes with a carbide insert with positive rake cutting angle and built-in chip breaker great for general purpose cutting action.
Blades exquisite workmanship, high strength, high toughness, stable and durable. If you need more matching blades (dcmt21.51), please search ASIN : B07GSYR1CZ